Marsh McLennan

Sustainability Report and Carbon Intensity Rankings

Is Marsh McLennan doing their part?

Their DitchCarbon score is 76

Marsh McLennan has a DitchCarbon Score of 76 out of 100, indicating a strong commitment to sustainability. This score reflects a lower carbon intensity in their operations and business practices. The company is performing well in reducing emissions and improving its environmental impact.

This was calculated based on 30+ company specific emissions data points, the higher the score, the better. Check out our methodology.

Industry emissions intensity

Very low




Very high

Marsh McLennan operates in the finance sector, which has a very low carbon intensity ranking compared to other industries. Some industries are more damaging than others, this ranking gives you an indication of how carbon intensive the industry is which this company operates in.

Location emissions intensity

Very low




Very high

Marsh McLennan operates in the United States, which has a low carbon intensity rating. This favorable environmental context supports the company’s sustainability efforts by reducing its overall carbon footprint.

...this company is doing 25.17% better in emissions than the industry average.

Marsh McLennan, founded in 1871 and headquartered in New York, operates in the finance sector as a preeminent professional services firm. Specializing in risk, strategy, and people, the company supports clients globally with a workforce of 83,000 across 130 countries and generates over $19 billion in annual revenue. Through its subsidiaries—Marsh, Guy Carpenter, Mercer, and Oliver Wyman—it offers a wide range of services including risk advisory, insurance solutions, reinsurance strategies, investment consulting, and strategic advisory.

Good news, Marsh McLennan has set SBTi climate action goals

Marsh McLennan has established Science Based Targets initiative (SBTi) commitments to significantly reduce its greenhouse gas emissions from its own operations, aligning with the goal of limiting global warming to 1.5°C. This involves a strategic reduction in scopes 1 and 2 emissions, which include direct emissions from owned or controlled sources and indirect emissions from the generation of purchased energy.

There’s always room for improvement,

DitchCarbon recommends...

Marsh McLennan should undertake a thorough inventory of all Scope 1 emissions sources to identify and mitigate direct greenhouse gas emissions, which could potentially reduce their emissions by 15%.

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Our methodology

Read about our emission calculation methodologies, and what the DitchCarbon Score means.